Window Functions

Backfilling Null Values Using the Last Value in a Partition in PySpark

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What will you learn? In this comprehensive tutorial, you will master the technique of filling null values in a PySpark DataFrame by utilizing the most recent non-null value within each partition. This skill is essential for data preprocessing and cleaning tasks in data analysis. Introduction to the Problem and Solution Encountering missing values is a … Read more

Can You Create Self-Referencing Columns in PySpark?

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What will you learn? In this comprehensive guide, you will delve into the intriguing concept of creating self-referencing columns in PySpark. Discover how to leverage window functions and Spark SQL capabilities to achieve this seemingly complex task. By the end, you’ll have a solid understanding of manipulating DataFrames to simulate self-referencing behavior. Introduction to Problem … Read more